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Finding the Fourth Proportional to 867,855.70, 1,301,200.35 and 394,297.30

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Solution

The fourth proportional to 867,855.70, 1,301,200.35 and 394,297.30 is: 591,180.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,855.70 : 1,301,200.35 = 394,297.30 : x
  2. Step 2: Convert to fraction form
    867,855.70/1,301,200.35 = 394,297.30/x
  3. Step 3: Cross multiply
    867,855.70x = 1,301,200.35 × 394,297.30
  4. Step 4: Simplify right side
    867,855.70x = 513,059,784,764.06
  5. Step 5: Solve for x
    x = 513,059,784,764.06/867,855.70
  6. Step 6: Final answer
    x = 591,180.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.